Raj Ghat is a simple black marble platform that marks the cremation site of Mahatma Gandhi. An eternal flame burns on one side, and the memorial sits in a lovely open courtyard. This is a simple and beautiful tribute and only takes a short while to see. You are required to remove your shoes before entering, and they will charge you ₹2 to get them back, so make you to keep some small change on you!
The India Gate is much like the Arc de Triomphe in Paris. It's a large arch that pays tribute to 70,000 Indian soldiers who lost their lives fighting for the British during WWI. There are street vendors who vie for your attention, trying to sell you all sorts of odds and ends. A common scam is people who pin paper Indian flags to your shirt (without asking first) and then demand money "for the children." Just walk away.
Once inside, there is a large central pool for Muslims to wash before they pray and then an inner part of the mosque for prayer. You are welcome to wander and photograph anything, but should not enter the inner mosque unless praying.
For the last stop of the day we went to the Red Fort. Built in 1648, this large fort was designed to keep out invaders. It was the home of the Mughal emperors for nearly 200 years. The distinctive red sandstone walls give the fort its name. Inside is like a small city. You wander down a vaulted arcade into an open area full of beautiful old buildings. There is also a war museum to visit.